JP7005331B2 - Imaging device and imaging system - Google Patents

Description

The present invention relates to an image pickup apparatus and an image pickup system.

As an image pickup apparatus, a configuration including a pixel including a light receiving portion having a photoelectric conversion film is known. Patent Document 1 describes an image pickup device in which a part of an electrode for reading a signal charge is arranged under a microlens.

Japanese Unexamined Patent Publication No. 2015-207594

In an image pickup apparatus having a photoelectric conversion film, when light is incident on a region of a gap between microlenses of adjacent pixels, the light is not focused. Therefore, it may be incident on the photoelectric conversion film of the adjacent pixel and become a false signal, which may cause color mixing or the like.

The uniformity of the present invention has a plurality of pixels and a plurality of ejection electrodes, and each of the plurality of pixels is a first electrode arranged on a member having a multilayer wiring layer, and the first electrode. A photoelectric conversion film arranged above, a second electrode arranged on the photoelectric conversion film, and a microlens arranged on the second electrode at a position overlapping the first electrode in a plan view. , And there is a gap in the plan view between the microlenses of the two adjacent pixels among the plurality of pixels, and the ejection electrode is located at a position overlapping the gap in the plan view. Regarding the image pickup device arranged in.

Provided is an image pickup apparatus in which color mixing due to a false signal is suppressed.

It is a figure explaining an embodiment. It is a figure explaining an embodiment. It is a figure explaining an embodiment. It is a figure explaining an embodiment. It is a figure explaining an embodiment. It is a figure explaining an embodiment. It is a figure explaining an embodiment. It is a figure explaining an embodiment. It is a figure explaining an embodiment. It is a figure explaining an embodiment. It is a figure explaining an embodiment. It is a figure explaining an embodiment. It is a figure explaining an embodiment. It is a figure explaining the image pickup system of an embodiment. It is a figure explaining the image pickup system of an embodiment.

Hereinafter, embodiments of the image pickup apparatus according to the present invention will be described with reference to the drawings. As for the parts not particularly shown or described in the present specification, well-known or publicly known techniques in the art concerned shall be applied. Moreover, the embodiment described below is one embodiment of the invention, and is not limited thereto.

(Embodiment 1)
(Overall configuration of the image pickup device)
FIG. 1 is a block diagram of an image pickup apparatus 100 having a distance measuring pixel and an image pickup pixel according to the present invention. An example is shown in which a pixel region 121, a vertical scanning circuit 122, two readout circuits 123, two horizontal scanning circuits 124, and two output amplifiers 125 are provided. The area other than the pixel area 121 is a peripheral circuit area.

In the pixel area 121, a large number of distance measuring pixels and imaging pixels are arranged two-dimensionally. A read circuit 123, for example, a column amplifier, a correlated double sampling (CDS) circuit, an adder circuit, and the like are provided in the peripheral circuit area. The reading circuit 123 amplifies, adds, and the like to the signal read from the pixels of the row selected by the vertical scanning circuit 122 via the vertical signal line. The horizontal scanning circuit 124 generates a signal for sequentially reading a signal based on the pixel signal from the reading circuit 123. The output amplifier 125 amplifies and outputs the signal of the column selected by the horizontal scanning circuit 124.

In this embodiment, an electron is used as a signal charge, but holes can be used as a signal charge.

(Element configuration of each pixel)
FIG. 2A is a schematic cross-sectional view of adjacent pixels 200 and electrodes 202 among the pixels 200 arranged in the pixel region 121 of FIG. In FIG. 2A, the member 210 includes a substrate 280, a multilayer wiring layer 281, an in-pixel readout circuit, and the like. The multilayer wiring layer 281 has a plurality of interlayer insulating layers and a plurality of wiring layers.

The substrate 280 is, for example, a silicon substrate, and an element such as a transistor is formed therein. In the present embodiment, the in-pixel readout circuit of each pixel 200 has an amplification transistor 288, a reset transistor 287, and a row selection transistor 401 (omitted in FIG. 2A).

The multilayer wiring layer 281 includes electrodes of the transistor, contact plugs, via plugs, and wiring for making an electrical connection with the transistor, and an interlayer insulating layer for insulating them from each other. For the contact plug, via plug, and wiring, a conductor containing, for example, aluminum, copper, tungsten, or the like can be used. As the interlayer insulating layer, for example, silicon oxide, silicon nitride, or an insulating film containing a laminate thereof can be used.

An electrode 201 serving as a lower electrode and an electrode 202 for discharging are provided on the member 210. A photoelectric conversion film 220 is provided on the electrode 201 and the electrode 202, and a counter electrode 230 serving as an upper electrode is provided on the photoelectric conversion film 220. A color filter 241 is provided on the counter electrode 230.

A microlens 250 is provided on the color filter 241 corresponding to the electrode 201. A flattening layer may be provided between the color filter 241 and the microlens 250. The microlens 250 is formed by using a material such as resin.

FIG. 2B is a top view (xy plane) of the microlens 250. FIG. 2C is a top view (xy plane) of the electrodes 201 and 202, and FIG. 2C shows the microlens 250 as a broken line. The cross-sectional view of FIG. 2 (A) corresponds to the plane along the alternate long and short dash line IJ of FIGS. 2 (B) and 2 (C).

Here, some of the components shown in the cross-sectional view, such as the color filter 241 and the like, are omitted. In the cross section along the alternate long and short dash line JJ, there is a gap 251 between the two microlenses 250.

The electrode 201 and the electrode 202 are thin film electrodes and are formed of a conductive member such as aluminum or copper. The photoelectric conversion film 220 is a photoelectric conversion film made of a material of an inorganic compound or an organic compound that generates an electric charge according to the amount of incident light. The electrode 201, the electrode 202, and the counter electrode 230 are electrodes for applying a voltage to the photoelectric conversion film 220 to generate an electric field in the photoelectric conversion film 220. Since the counter electrode 230 is provided on the incident surface side of the light with respect to the photoelectric conversion film 220, the counter electrode 230 is made of a conductive material such as ITO (Indium Tin Oxide) which is transparent to the incident light.

As shown in FIG. 2B, in the top view, the microlens 250 has a gap 251 with adjacent pixels in the diagonal direction. Specifically, the plurality of microlenses 250 may be separated from each other in the diagonal direction (direction along the alternate long and short dash line JJ) (FIG. 3 (B)). Further, as one microlens layer, a plurality of microlenses 250 may be connected to each other. Here, the gap 251 is a region that does not substantially have the power of the microlens 250 (a region that does not substantially perform the function of condensing light on the photoelectric conversion film 220).

The electrode 202 is arranged between the member 210 and the photoelectric conversion film 220. As shown in FIG. 2C, in a plan view, the electrode 201 is arranged at a position overlapping the microlens 250, and the electrode 202 is arranged below the gap 251 (overlapping position).

Of the charges generated in the region of the photoelectric conversion film 220, the charges generated on the electrode 202 can be discharged from the electrode 202. Of the charges generated in the region of the photoelectric conversion film 220, the charges generated on the electrode 201 can be output from the electrode 201. An captured image can be acquired based on the output (signal) obtained from the electrode 201. That is, the signal from the electrode 201 can be a signal for image formation.

The light incident from the gap 251 is incident on the photoelectric conversion film 220 near the electrode 202 without being bent by the microlens 250. Here, since the light incident from the gap 251 is not focused by the microlens 250, it may be incident on the photoelectric conversion film 220 of a pixel that is not the corresponding pixel and be photoelectrically converted. Since the charge generated in this way is output as a signal in a pixel different from the original pixel, it becomes a false signal and causes, for example, color mixing.

On the other hand, in the present embodiment, the ejection electrode 220 is arranged under the gap 251 of the microlens 250. Therefore, based on the light incident from the gap 251, the charge photoelectrically converted at the portion of the photoelectric conversion film 220 overlapping the gap 251 can be discharged from the electrode 202. Therefore, it is possible to suppress color mixing and the like.

Further, in order to suppress color mixing, it is possible to have a configuration in which electrodes for ejection are provided in a grid pattern over the entire area between adjacent pixels. However, in this case, the signal detection electrode 201 is arranged only in the center of the pixel 200, and the sensitivity of oblique incident deteriorates. On the other hand, by arranging the microlens 250 in the gap 251 as in the present embodiment, it is possible to suppress the deterioration of the sensitivity of oblique incident.

Therefore, the ejection electrode 202 can be arranged at a position where it overlaps with the gap 251 in a plan view and does not overlap with the microlens 250. However, the image pickup apparatus of this embodiment is not limited to this configuration, and a part of the ejection electrode 202 may overlap with the microlens 250. Even in this case, as will be described later, for example, by adjusting the voltage applied to the electrode 202 and the counter electrode 230, a region in the photoelectric conversion film 220 from which a signal is taken out as a signal for image formation and a false signal from the electrode 202. It is possible to control the area where the signal is emitted.

Further, in order to suppress color mixing, the emission electrode may be an electrode having a light-shielding property, and may be arranged above the photoelectric conversion film 220 (on the light incident side). However, in this case, if even a part of the ejection electrode 202 is arranged at a position overlapping the microlens 250 in a plan view, it causes a decrease in sensitivity. On the other hand, in the present embodiment, since the electrode 201 and the electrode 202 are located below the photoelectric conversion film 220 (on the substrate side), the decrease in sensitivity can be suppressed.

Further, in order to suppress color mixing between adjacent pixels, it is conceivable to use a gapless microlens that eliminates the gap 251 between the microlenses 250 between the adjacent pixels 200. However, if the height of the microlens 250 is increased and the power is increased (the radius of curvature is reduced) in order to improve the sensitivity, a gap is likely to occur between the adjacent pixels in the diagonal direction, and the gapless microlens is used. It becomes difficult to do. Therefore, by using the configuration of the present embodiment, it is possible to suppress color mixing while improving the sensitivity.

Next, the equivalent circuit of one pixel 200 and the ejection electrode 202 of the image pickup apparatus of this embodiment will be described with reference to FIG. 3A. The pixel 200 has an electrode 201, a photoelectric conversion film 220, a counter electrode 230, and an in-pixel readout unit. The in-pixel readout unit includes a reset transistor 287, an amplification transistor 288, and a row selection transistor 401. The configuration may be such that the row selection transistor 401 is not provided. Further, any configuration can be added, such as providing a transfer transistor between the electrode 201 and the amplification transistor 288 and providing a capacitance between the electrode 201 and the gate of the amplification transistor 288. The row selection transistor 401 is connected to the signal line 402, and the signal line 402 is connected to the read circuit 123 of FIG. The amplification transistor 288 constitutes a source follower circuit with a current source (constant current source in this embodiment) arranged on the signal line 402.

A control signal PRESS is input to the gate of the reset transistor 287, and one terminal of the reset transistor is connected to the electrode 201 and the other terminal is connected to the wiring VRES. The gate of the amplification transistor 288 is connected to one terminal of the electrode 201 and the reset transistor 287. One terminal of the amplification transistor is connected to the wiring S VDD, and the other terminal is connected to one terminal of the row selection transistor 401.

The control signal PSEL is input to the gate of the row selection transistor 401, and the other terminal of the row selection transistor 401 is connected to the signal line SIG. The counter electrode 230 is connected to the wiring Vtop. Although the discharge electrode 202 is omitted in the cross section of FIG. 2A, it is connected to the wiring L1.

In the configurations of FIGS. 2 (A) to 2 (C), FIGS. 3 (A) and (B), the electrode 202 is configured to be smaller than the gap 251 in a plan view, but FIGS. 4 (A) to 4 (C) As shown in the above, the electrode 202 may be configured to be larger than the gap 251. By enlarging the electrode 202, the electric charge converted by the incident light spreading from the gap 251 can be efficiently discharged from the electrode 202. Therefore, color mixing can be further suppressed.

Further, the image pickup apparatus shown in FIGS. 2 to 4 does not have an electrode 201 under the gap 251 in a plan view. That is, the electrode 201 does not overlap the gap 251. As a result, it is possible to prevent the electric charge generated by the light incident from the gap 251 from entering the electrode 201 and causing color mixing.

The shapes of the electrodes 201 and 202 are not limited to the shapes of FIGS. 2 to 4. For example, a circle as shown in FIG. 5 (A), a shape obtained by cutting a part of a circle as shown in FIG. 5 (B), and another polygonal shape such as a quadrangle or a hexagon as shown in FIG. 5 (C). There may be. Further, the electrode 201 and the electrode 202 may be configured by a combination thereof.

Further, in FIG. 3A, an example in which the discharge electrode 202 is directly connected to the wiring L1 is shown, but as shown in FIG. 6, even if the electrode 202 is connected to the wiring L1 via the switch element 402. good. By providing the switch element 402, the amount of discharge from the electrode 202 can be adjusted, and the sensitivity can be adjusted.

In FIG. 7, it will be described that the charge collection regions 260 and 261 for collecting the charges generated in the photoelectric conversion film 220 are changed by changing the voltages applied to the electrodes 201 and 202. Here, the region where the charge is collected by the electrode 201 is the charge collection region 260, and the region where the charge is collected by the electrode 202 is the charge collection region 261.

FIG. 7A shows a case where the charge collection area 260 is widened, and FIG. 7B shows a case where the charge collection area 260 is narrowed. The sensitivity can be changed by changing the voltage of the electrode 201 that acquires the image pickup signal. In addition, the sensitivity to oblique incidence can be changed. For example, the voltage of the electrode 201 can be changed by changing the voltage of the wiring VRES to which the other end of the reset transistor 287 is connected. By increasing the potential difference between the electrode 201 and the counter electrode 230, the charge collection region 260 can be increased.

FIG. 7C shows a case where the charge collection area 261 is widened, and FIG. 7D shows a case where the charge collection area 261 is narrowed. By changing the voltage of the electrode 202 that discharges the charge, the region of the discharged charge can be adjusted with respect to the light incident on the gap 251 of the microlens 250. By increasing the potential difference between the electrode 202 and the counter electrode 230, the charge collection region 261 can be increased.

FIG. 8 shows an example of a configuration in which the voltage applied to the electrode 202 can be changed. The description of the same configuration as in FIG. 3A will be omitted. The electrode 202 is connected to the wiring L1 that supplies the potential V1 via the switch element 402. Further, the electrode 202 is connected to the wiring L2 that supplies the potential V2 higher than the potential V1 via the switch element 403. With such a configuration, the voltage applied to the electrode 202 can be changed by controlling the switch elements 402 and 403.

The charge collecting region 260 and the charge collecting region 261 may be gradually changed in size from the center of the pixel 200 to the periphery in the photoelectric conversion film 220, for example.

By adopting the configuration of the present embodiment, color mixing is suppressed while having sensitivity.

(Embodiment 2)
The present embodiment will be described with reference to FIGS. 9A to 9C and FIG. FIG. 9B is a top view (xy plane) of the microlens 250. 9 (C) is a top view (xy plane) of the electrode 201 and the electrode 202, and in FIG. 9 (C), the microlens 250 is represented by a broken line. The cross-sectional view of FIG. 9 (A) corresponds to the plane along the alternate long and short dash line IJ of FIGS. 9 (B) and 9 (C).

The pixel 300 of the present embodiment is different from the pixel 200 of the first embodiment in that the electrode 201 is divided into two, an electrode 203 and an electrode 204. By dividing the electrode 201 into the electrode 203 and the electrode 204, it becomes possible to detect the phase difference in the x direction of FIG. This makes it possible to perform focus detection and distance measurement. The signals from the electrodes 203 and 204 can be used as a focus detection signal or a distance measuring signal.

In FIG. 9A, the relationship between the pixel 300, the subject 330, and the exit pupil 420 of the image pickup lens will be described. FIG. 9B is a plan view (xy plane) of the exit pupil 420. In the figure, the x direction is the pupil division direction, and the respective regions of the divided exit pupil 420 are the pupil region 421 and the pupil region 422. The exit pupil 420 and the photoelectric conversion film 220 are in a conjugated relationship via the microlens 250.

The light that has passed through the pupil region 421 generates an electric charge in the portion of the photoelectric conversion film 220 located above the electrode 203. Further, the light that has passed through the pupil region 422 generates an electric charge in the portion of the photoelectric conversion film 220 located above the electrode 203. Two parallax images can be acquired from the signal charge collected by the electrode 203 and the signal charge collected by the electrode 204, and the focus can be detected by the phase difference. In addition, distance measurement can be performed.

In FIG. 9, the discharge electrode 202 is arranged diagonally with respect to the electrode 203 and the electrode 204, and is not arranged in the x direction. Therefore, it is possible to take in a wide range of light in the x direction and widen the angle range for focusing detection. Further, since the electric charge due to the light incident from the gap 251 of the microlens 250 is discharged from the electrode 202, it is possible to remove a false signal that deteriorates the focus detection performance and the distance measurement performance.

Further, as a method of reading out another electric charge, the electric charge is discharged from the electrode 204 and the electrode 202, and the electric charge is read out from the electrode 203. Next, after the electric charge is accumulated again, the electric charge may be discharged from the electrode 203 and the electrode 202, and the electric charge may be read out from the electrode 204. In the photoelectric conversion film 220, the electric charge generated in the region overlapping the gap 251 in a plan view can be further discharged, and the focus detection performance and the distance measurement performance can be improved.

The electrode 203 and the electrode 204 are not limited to FIG. 9, and may be divided in the vertical direction as shown in FIG. 11 (A). By dividing in the vertical direction, it becomes possible to detect the focal point in the y direction of FIG. 11A. Further, it may be divided in an oblique direction as shown in FIG. 11B. By making the configuration diagonally divided, it is possible to detect the focus in the diagonal direction, and it is also possible to detect the focus in the x direction and the y direction at the same time.

Further, the shape of the electrode 203 and the electrode 204 may be, for example, a shape obtained by dividing the electrode 201 of FIG. 5 into two. Further, as described with reference to FIGS. 7 and 8 of the first embodiment, the charge collection region can be changed by changing the voltage applied to the electrode 203 and the electrode 204. For example, the voltage applied to the electrode 203 and the electrode 204 can be gradually changed from the center of the pixel region to the periphery. As a result, the position of the boundary between the electrode 203 and the charge collection region of the electrode 204 can be changed, and the desired focal point can be detected with respect to the incident angle of the image pickup lens.

(Embodiment 3)
The present embodiment will be described with reference to FIGS. 12 (A) to 12 (C) and FIGS. 13 (A) and 13 (B). FIG. 12B is a top view (xy plane) of the microlens 250. 12 (C) is a top view (xy plane) of the electrode 201 and the electrode 202, and in FIG. 12 (C), the microlens 250 is represented by a broken line. The cross-sectional view of FIG. 12 (A) corresponds to the plane along the alternate long and short dash line IJ of FIGS. 12 (B) and 12 (C).

The pixel 400 of the present embodiment has a configuration in which the electrode 201 is divided into three, an electrode 203, an electrode 204, and an electrode 207, with respect to the pixel 200 of the first embodiment. The electrode 203 and the electrode 204 are separated from each other as compared with the second embodiment, and the pupil region 421 and the pupil region 422 described with reference to FIG. 10 are separated from each other, and the parallax is increased, so that the focus detection performance is improved. .. Further, when only the electrode 207 is read out, the light focused in the x direction is taken in, and it is possible to acquire a captured image having a deep depth of field in the x direction with respect to the first and second embodiments. When the charge is read out only from the electrode 207, the charge may be discharged from the electrode 203, the electrode 204, and the electrode 202.

Further, the electrode 203, the electrode 204, and the electrode 207 can be read out separately and used as an image of each parallax. Further, the electrode 203, the electrode 204, and the electrode 207 can be simultaneously read out and used as a combined signal of the image pickup pixel.

The shapes of the electrodes 203, 204, and 207 are not limited to FIG. 12, and the electrodes 207 may be shortened in the y direction as shown in FIG. 13 (A). When the signal of only the electrode 207 of FIG. 13A is read out, the light focused in the x-direction and the y-direction is taken in, so that it is possible to acquire a captured image having a deeper depth of field.

As shown in FIG. 13B, the electrode 203, the electrode 204, and the electrode 207 may be divided into a plurality of shapes in the y direction. Focus detection can be performed not only in the x direction of FIG. 12 but also in the y direction. Further, a part of each of the electrodes 203, 204, and 207 may be read out, and a part of the electrodes may be used as a discharge electrode.

(Embodiment 4)
(Embodiment of Imaging System>
This embodiment is an embodiment of an image pickup system using an image pickup apparatus including a distance measuring pixel and an image pickup pixel described in the above embodiment. As an imaging system, for example, there is an in-vehicle camera.

FIG. 14 shows the configuration of the imaging system 1. The image pickup system 1 includes an image pickup device 100, a processing unit 21, a display unit 18, an operation switch 10, and a recording medium 20. The processing unit 21 includes, for example, a lens control unit 12, an image pickup device control unit 16, an image processing unit 17, and an aperture shutter control unit 14. The processing unit 21 processes the signal from the image pickup apparatus 100.

An image pickup lens, which is an image pickup optical system 11, is attached to the image pickup system 1. The image pickup optical system 11 controls the focal position by the lens control unit 12. The diaphragm 13 is connected to the diaphragm shutter control unit 14 and adjusts the amount of light by changing the aperture diameter of the diaphragm.

In the image space of the image pickup optical system 11, an image pickup surface of the image pickup apparatus 100 is arranged in order to acquire a subject image imaged by the image pickup optical system 11. The CPU 15 is a controller and controls various operations of the camera. The CPU 15 includes a calculation unit, a ROM, a RAM, an A / D converter, a D / A converter, a communication interface circuit, and the like. The CPU 15 controls the operation of each part in the camera according to a computer program stored in the ROM, and AF, imaging, image processing, recording, etc. including distance measurement with the subject and detection of the focal state of the photographing optical system (focus detection). A series of shooting operations are executed.

The CPU 15 corresponds to a signal processing means. The image pickup device control unit 16 controls the operation of the image pickup device 100 and transmits a pixel signal (imaging signal) output from the image pickup device 100 to the CPU 15. The image processing unit 17 performs image processing such as γ conversion and color interpolation on the image pickup signal to generate an image signal. The image signal is output to a display unit 18 of a liquid crystal display (LCD) or the like. The CPU 15 is operated by the operation switch 19, and the captured image is recorded on the detachable recording medium 20.

(Embodiment of in-vehicle imaging system)
15 (A) and 15 (B) show an example of an image pickup system relating to a vehicle-mounted camera. The image pickup system 2000 has a distance measuring pixel and an image pickup pixel according to the present invention. The image pickup system 2000 has an image processing unit 2030 that performs image processing on a plurality of image data acquired by the image pickup apparatus 2010. It also has a parallax calculation unit 2040 that calculates parallax (phase difference of parallax images) from a plurality of image data acquired by the imaging system 2000. As the image pickup device 2010, the image pickup device described in the above-described embodiment can be used.

Further, the imaging system 2000 includes a distance measuring unit 2050 that calculates the distance to the object based on the calculated parallax, and a collision determination unit 2060 that determines whether or not there is a possibility of collision based on the calculated distance. And have. Here, the parallax calculation unit 2040 and the distance measurement unit 2050 are examples of distance information acquisition means for acquiring distance information to an object. That is, the distance information is information related to parallax, defocus amount, distance to an object, and the like. The collision determination unit 2060 may determine the possibility of collision using any of these distance information.

The distance information acquisition means may be realized by hardware specially designed, or may be realized by a software module. Further, it may be realized by FPGA (Field Programmable Gate Array), ASIC (Application Specific Integrated Circuit), or the like, or may be realized by a combination thereof.

The image pickup system 2000 is connected to the vehicle information acquisition device 2310, and can acquire vehicle information such as vehicle speed, yaw rate, and steering angle. Further, the image pickup system 2000 is connected to a control ECU 2410 which is a control device that outputs a control signal for generating a braking force to the vehicle based on the determination result of the collision determination unit 2050. That is, the control ECU 2410 is an example of a moving body control means that controls a moving body based on distance information. The image pickup system 2000 is also connected to an alarm device 2420 that issues an alarm to the driver based on the determination result of the collision determination unit 2050. For example, when the collision possibility is high as the determination result of the collision determination unit 2050, the control ECU 2410 controls the vehicle to avoid the collision and reduce the damage by applying the brake, releasing the accelerator, suppressing the engine output, and the like. The alarm device 2420 warns the user by sounding an alarm such as a sound, displaying alarm information on the screen of a car navigation system, or giving vibration to the seat belt or steering.

In the present embodiment, the surroundings of the vehicle, for example, the front or the rear, are imaged by the image pickup system 2000. FIG. 14B shows an imaging system 2000 for imaging the front of the vehicle (imaging range 2510). The vehicle information acquisition device 2310 sends an instruction to operate the image pickup system 2000 to perform the image pickup. By using the image pickup device 100 of the first to third embodiments described above as the image pickup device 2010, the image pickup system 2000 of the present embodiment can further improve the accuracy of distance measurement.

In the above explanation, an example of controlling so as not to collide with another vehicle has been described, but it can also be applied to control for automatic driving following other vehicles, control for automatic driving so as not to go out of the lane, and the like. be. Further, the image pickup system can be applied not only to a vehicle such as an automobile but also to a moving body (moving device) such as a ship, an aircraft or an industrial robot. In addition, it can be applied not only to mobile objects but also to devices that widely use object recognition, such as intelligent transportation systems (ITS).

210 Member 201 Electrode 202 Electrode 220 Photoelectric conversion film 230 Opposite electrode 250 Microlens

Claims (15)

It has multiple pixels and multiple ejection electrodes,
Each of the plurality of pixels
A first electrode arranged on a member having a multi-layer wiring layer,
The photoelectric conversion film arranged on the first electrode and
The second electrode arranged on the photoelectric conversion film and
A microlens arranged on the second electrode at a position overlapping the first electrode in a plan view,
Have,
Among the plurality of pixels, there is a gap in the plan view between the microlenses of two adjacent pixels.
The discharge electrode is arranged between the member and the photoelectric conversion film, and is arranged.
The ejection electrode is an image pickup device arranged at a position overlapping the gap in the plan view. The first electrode is connected to the gate of the amplification transistor and
The image pickup apparatus according to claim 1 , wherein the discharge electrode is directly connected to the first wiring of the first potential. The first electrode is connected to the gate of the amplification transistor and
The image pickup apparatus according to claim 1 , wherein the discharge electrode is connected to the first wiring of the first potential via the first switch element. The image pickup apparatus according to claim 3 , wherein the discharge electrode is connected to a second wiring having a second potential different from the first potential via a second switch element. The image pickup apparatus according to any one of claims 1 to 4 , wherein the first electrode is not arranged at a position overlapping the gap in the plan view. The image pickup apparatus according to any one of claims 1 to 5 , wherein the discharge electrode is arranged at a position not overlapping with the microlens in the plan view. The image pickup apparatus according to any one of claims 1 to 5 , wherein the second electrode is arranged at a position overlapping a part of the microlens in the plan view. The image pickup apparatus according to any one of claims 1 to 7 , wherein the shape of the first electrode is polygonal in the plan view. The image pickup apparatus according to any one of claims 1 to 7 , further comprising a third electrode on the member at a position overlapping the microlens in the plan view. The image pickup apparatus according to claim 9 , wherein the signals from the first electrode and the third electrode are a signal for distance measurement or a signal for focus detection. The image pickup apparatus according to claim 9 or 10 , further comprising a fourth electrode between the first electrode and the third electrode in the plan view. The imaging device according to claim 11 , wherein the signal from the fourth electrode is a signal for image formation. The first electrode, which can change the magnitude of the voltage applied to the first electrode, is connected to one terminal of the reset transistor.
The other terminal of the reset transistor is connected to the third wire.
The image pickup apparatus according to any one of claims 1 to 12 , wherein the potential of the third wiring can be changed. The first electrode is connected to one terminal of the reset transistor and is connected to one terminal.
The other terminal of the reset transistor is connected to the third wire.
The image pickup apparatus according to any one of claims 1 to 13 , wherein the potential of the third wiring can be changed. The image pickup apparatus according to any one of claims 1 to 14 ,
An image pickup system having a processing unit that processes a signal from the image pickup device.

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